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(c) WAVEFORM 2: Air Fuel Ratio Sensor Heater TERMINAL NO. (SYMBOL) TOOL SETTING CONDITION CH1: D74-22 (HA1A) - D74-23 (E04) 5 V/DIV., 10 msec./DIV. Idling with warm engine CH2: D74-20 (HA2A) - D74-21 (E05) 5 V/DIV., 10 msec./DIV. Idling with warm engine HINT: The wavelength varies in accordance with the engine operating conditions. (d) WAVEFORM 3: Heated Oxygen Sensor TERMINAL NO. (SYMBOL) TOOL SETTING CONDITION D74-114 (OX1B) - D74-115 (EX1B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor D74-112 (OX2B) - D74-113 (EX2B) 0.2 V/DIV., 200 msec./DIV. Engine speed maintained at 2500 rpm for 2 minutes after warming up sensor HINT: In the Data List, item O2S B1S2 and O2S B2S2 show the ECM input values from the heated oxygen sensor. (e) WAVEFORM 4: Fuel Injector No. 1 (to No. 8) Injection Signal TERMINAL NO. (SYMBOL) TOOL SETTING CONDITION D74-86 (#10) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling D74-109 (#20) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling D74-85 (#30) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling D74-108 (#40) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling D74-84 (#50) - D74-43 (E01) 20 V/DIV., 20 msec./DIV. Idling 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS... |